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Finding the Fourth Proportional to 68,696.70, 103,077.45 and 51,200.70

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Solution

The fourth proportional to 68,696.70, 103,077.45 and 51,200.70 is: 76,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,696.70 : 103,077.45 = 51,200.70 : x
  2. Step 2: Convert to fraction form
    68,696.70/103,077.45 = 51,200.70/x
  3. Step 3: Cross multiply
    68,696.70x = 103,077.45 × 51,200.70
  4. Step 4: Simplify right side
    68,696.70x = 5,277,637,594.22
  5. Step 5: Solve for x
    x = 5,277,637,594.22/68,696.70
  6. Step 6: Final answer
    x = 76,825.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.